Puzzle.



No. 819,345. PATENTED'MAY 1, 1906..

B. DORSTROM. PUZZLE.

APPLICATION FILED FEB. 5. 1906.

WI TNEEEEE .INYENTUR.

BENJAMIN DORSTROM, OF BRISTOL, RHODE ISLAND.

PUZZLE.

Specification of Letters Patent.

l'ratenteoi May 1, 1.906.

Application filed February 5, 1906. Serial No. 299,637.

To all whom, it vnay concern:

Be it known that I, BENJAMIN DORSTROM, a citizen of the United States,residing at Bristol, in the county of Bristol and State of Rhode Island,have invented a new and useful Improvement in Puzzles, of which thefollowing is a specification.

This invention has reference to an improvement in puzzles, and moreparticularly to an improvement in that form of puzzles which requiresone part of the puzzle to be separated from the other part to solve thesame.

The object of my invention is to construct a puzzle which is extremelydifficult to solve by the uninstructed, but which may be easily solvedwhen the required movements are known.

A further object of my invention is to con-.. struct a puzzle having aplurality of parts for parts forming the body of the puzzle, showing thesamein the position for assembling. Fig. 2 is a side view of the linkremoved from the body of the puzzle. Fig. 3 is a face view of thecomplete puzzle, showing the link locked to the body of the puzzlebetween the radial arms. Figs. 4, 5, and 6 are sectional viewsillustrating the different movements required to separate the link fromthe body of the puzzle. Fig. 7 is a face view of the central diskremoved from the body of the puzzle; and Fig. 8 is an enlargedsectionalview through the completepuzzle, taken on line 8 8 of Fig. 3.

In the drawings, a, I), and'c indicate the front, back,'and centraldisks, d d the outside plates, e the central connecting-stud, and f theremovable link, of my im roved puzzle.

The disks a, b, and c are i entically alike, each being stamped fromsheet metal by suitable diesshaped to form the cam-slot g, the end g ofwhich is concentric and the end 9 eccentric with the center of the diskand the series of eight arms h h extending radially from the edge of thedisk, in one of which is the radial slot 1', extending inwardly from theedge of the arm at its base toward the center 7 of the disk, as shown inFigs. 4 and 7.

The outside plates (1 (1 each have a central hole (1 d for the stud e,as shown in Fig. 8. The link f is constructed of wire in an elongatedrectangular form shorter than the diameter of the disks across theradial arms h h and having the ends f and f 2 connected togetherby thesides f 3 f as shown in Fig. 2.

The body of the puzzle is assembled by holding the front disk a in theposition as shown in full lines in Fig. 4, placing the central disk 0 onthe back of the front disk a in the reverse position, as shown in brokenlines in Fig. 4 and in full lines in Fig. 7, then placing the back diskI) on the back of the central disk 0 in a position for the cam-slot gand the radial slot '0 to coincide with the cam-slot and radial slot inthe front disk a, inserting the stud e through the ends 9 of thecam-slot g in the center of the disks, then placing the outside plates(1 d in a position for the holes d d in the disk to coincide with theends of the stud e, and securing the wholetogether by riveting the endsof the stud to the plates through the holes in the plate, as shown inFig. 8.

The link f is separated from the body of the puzzle, where it is lockedbetween the radial arms h h, and the puzzle solved by first movingthefront disk a in the direction of the arrow, as shown in Fig. 4, tomove the stud e in the cam-slot g from the concentric end g to theeccentric end 9 of the cam-slot and to move the disk (1 into theposition as shown in Fig. 5. The back disk I) is now given identicallythe same movement as the front disk 0 to bring the back disk into aposition for the cam-slots g g in the front-and back disks tocoincide,for the stud e to extend through the eccentric ends 9 g of thecam-slots, and for the radial slots 0', i to coincide outside of theedge of the plates d d, as shown in Fig. 5. The central disk 0 is nowmoved in the direction of the arrow, as shown in Fig. 5, into theposition as shown in Fig. 6, bringing the stud e into the eccentric endg of the cam-slot g in the central disk and the radial slot i in thecentral disk into a position to coincide with the slots t t in the frontdisk at and the back disk I), thus bringing all of the slots i c' i,outside of the plates (1 d. The end f of the link f is now moved intothe radial slots i i i, bringing the end f 2 of the link into a positionto be easily carried over the ends of the arms h h ICC and moved intothe position, as shown in broken lines in Fig. 6, when a slightoutwardpull will remove the link from the body of the puzzle. Byreversing these movements the link may again be locked to the body ofthe puzzle between the arms h h, as shown in I do not wish to confinemyself to the exact structure shown, as it is evident that the number ofarms h it could be varied and that the link f could be stamped fromsheet metal or an endless chain substituted for the link withoutmaterially affecting the spirit of my invention.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. A puzzle comprising a body consisting 1 of aplurality of disks each disk having a series of arms extending radiallyfrom the disk and a link or its equivalent adapted to be locked to thebody between the radial arms, means for holding the disks together, andmeans for controlling the movements of the disks, whereby on the disksbein made to assume predetermined positions t e link is radiallydetached from the body.

2. A puzzle comprising a body consisting of three disks each disk havinga series of arms extending radially from the disk and a link or itsequivalent adapted to be locked to the body between the radial arms,means for holdin the disks together, and means for controfiing themovements of the disks, whereby on giving a predetermined movement tothe outer disks in the same direction and the same movement to thecentral disk in the reverse direction, the link is readily detached fromthe body.

3. A puzzle comprising a body consisting of a plurality of disks eachdisk having a series of arms extendin radially from the disks, acam-slot, and a racial slot, a stud adapted 'to extend through thecam-slots in the disks, plates secured to the end of the stud andadapted to conceal the slots in the disks, and a link or its equivalentadapted to be locked to the body between the radial arms, whereby on thedisks being made to assume redetermined positions, the link is readi ydetached from the body.

4. A puzzle comprising a body consisting of a plurality of disks eachdisk having a series of radial arms, a cam-slot one end of which isconcentric and the other end eccentric with the center of the disk and aradial slot extending from the edge of the disk toward the center of thedisk, a stud adapted to extend through the concentric ends of thecam-slots with the body in the locked position, plates adapted toconceal the slots in the disks and secured to the ends of the stud, alink or its equivalent adapted to be locked to the body between theradial arms, whereby on the disks being moved into predeterminedpositions the radial slots are moved outward beyond the plates into aposition to coincide and to receive one end of the link, thus allowingthe other end of the link to be carried over the ends of the radial armsand detached from the body, as described.

5. A puzzle comprising a body consisting of three disks each disk havinga series of radial arms, a cam-slot one end of which is concentric andthe opposite end of which is eccentric with the center of the disks anda slot extending radially from the edge of one arm toward the center ofthe disk, the cam and radial slots in the central disk being in a reversed position relative to the cam and radial slots in the outsidedisks, a stud adapted to extend through the concentric ends of the camslots with the bodyin the locked position, circular plates adapted toconceal the slots in the disks and secured to the ends of the stud, anda link or its equivalent adapted to be locked to the body between theradial arms, whereby on the disks being moved to bring the stud from theconcentric end to the eccentric end of the cam-slot, the radial slots inthe disks are moved outward beyond the edges of the plates and into anexposed position to coincide and to receive one end of the link, thusallowing the opposite end of the link to be carried over the ends of theradial arms and detached from the body, as described.

6. In a puzzle, the combination of the disks a, b and 0 each disk havinga cam-slot g the end 9 being concentric with the center of the disk, theseries of arms h h extendin radially from the edge of the disk and a raial slot '5 extending inwardly from the edge of one of the arms towardthe center of the disk, the plates (1 (1 each having a central hole d, astud e adapted to extend through the camslots g g g in the disks andriveted to the plates h it through the holes h h in the plates, and anelongated rectangular link f having the ends f and f 2 connected by thesides f 3 f adapted to be locked to the disks between the arms h 7L andto be detached from the disks by redetermined movements of the disks, asescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

BENJAMIN DORSTROM. Witnesses:

ADA E. HAGERTY, J. A. MILLER.

